Improved sawing-machine



PATENT @erica N. B. BROWN, OF ANTWERP, NEW YORK.

IMPROVE!) SAWINGMACHINE.

Specification forming part ofLetterrs Patent No. 39,880, dated September15,1863.

T0 a/ZZ whom t may concern:

Be it known that l, N. B. BROWN, of Antwerp, in the county of Jeffersonand State of New York, have invented a new and lmproved VSawing-Machine,and I do hereby declare that the following is a full, clear, and exactdescription of tlie'same, reference being had to the accompanyingdrawings, making a part of this specification, in which- Figure lis aside elevation of my invention; Fig. 2, a plan or'top view of the same;Fig. 3, a vertical section of a cross-head pertaining tothe same, takenin the line w ar, Fig. l.

Similar letters ofvreference indicate corresponding parts in the severalfigures.

This invention relates to anew and improved crosscut-sawin g machine forsawingre-wood, Src.. and it consists in a novel and improved arrangementof means for feeding the log to the saw, whereby it is believed thatseveral advantages are obtained over the sawing-machines hithertodevised for the same work or purpose.

To enable those skilled in the art to fully understand and construct myinvention, I will proceed to describe it.

A represents a rectangular frame,which supports the saw and its drivingparts 5 and B is a frame which is connected at right angles to A, andsupports the log to be sawed. The frame B has a carriage, C, fitted uponit, and arranged in such a manner as to slide freely back and forththereon. This carriage is provided with two dogs, c a, which arefastened into the log l), one on each side of it, and secure the backpart of the log on the carriage. 0n the front part of the frame B thereis placed a roller, E, which is grooved circumferentially at its centerand provided with teeth b. The front part of the log D ts or rests inthis groove, the teeth 'b penetrating the log. The carriage C may alsobe provided with teeth to penetrate the log and prevent the latterslipping on the carriage.

On ,one4 end of the shaft c of the roller E there is placed abevel-pinion, d, into which a pinion, e, on a shaft, F, gears, the shaftF, being at right angles to the roller-shaft c, and having a pulley, f,upon it, around which a cross belt or rope, G, passes, said belt orropealso passing around a pulley, H, on a shaft, I, in the frame A. Thepulley= H is placed loosely on the shaft I, and is connected with thelatter when desired by means of a clutch, J, onepart, g, of which isattached concentrically to the loose pulley H, and the other part, IL,attached permanently to the shaft L The part g of the clutch has agroove, t', made circumferentially in it to receive a forked lever, K,which has its 4fulcrum j in a cross-bar, k, of the frame A. This lever Kis connected by a rod, l, with a lever, L, which is at right angles tolever K, and is connected by a rod,m, with a spring, M, the latterhaving a tendency to keep the part g of the clutch J free from the parth, and consequently to prevent motion being communicated to the shaft Ffrom the shaft I. The shaft l is the driving-shaft of the machine, andupon its outer end there is secured a pulley, N, having a wrist-pin, n,attached to it at any desired distance from its center, according to thelength of` stroke required for the same.

O represents a metal bar or plate, which has a vertical or nearlyvertical slot, o, made in it, through which the wristpin n passes. Thisbar O is provided with flanges or lugs p p', which project from it atright angles at opposite sides, and the bar 0 is made in two separateparts and connected by screws g. This arrangement is for the purpose ofadmitting of the wrist-pin n being inserted in the slot o ofthe bar orplate O. The plate or lug p is attached by bolts or screws to twoparallel bars, r r, each of which has a way or guide, s, attached to itsinner surface, and these ways or guides work in grooves made in plates tt at opposite sides of a rockshaft, P, on the frame A. The plate or lugp is bolted to a bar, Q, having the saw B attached to its outer end.This bar Q has a rod, u, attached to each side of it, and these rods uare fitted and work in grooves made in the inner sides of plates S S,which are attached by pivots c c to two slides, T T, fitted on uprightsV V, a-ti tached to the frame A. The slides T are simply metal platesprovided at each end with a lip, w, to project over the sides oftheuprights V, and the pivots c pass centrally through the plates S intothe slides T. The plates S S are connected by a bail-shaped bar, V,having a handle, c', attached to it for the purpose of raising the bar Qand saw R when necessary, and the bar and saw may be retained in anelevated position by means of a spring levercatch, b', or other suitabledevice. To the up- 2 sasso per end of each upright V there is attached abar, W, and the front ends ot' the latter have a guide, X, secured tothem, through which a vertical bar, Y, passes, said bar Y having apulley, Z, at its lower end, which bears upon the back of the saw R.

From the above description it will be seen that when power is applied tothe shaft I a reciprocating motion will be given lto the bar Q and sawIt, in consequence ot' the wrist pin a of the pulley N working in theslot o ot' the har O, and the saw will he fed to its work by its owngravity, in connection with the gravity ofthe bar Q. The pulley Z servesas a guide for the saw It, and the plates S, rods u u, ways s s, andplates t t serve as guides for the bar Q. The latter, as well as thesaw, is allowed to fall as the saw cuts in consequence ot' the slides Tworking freely on the uprights V V, and the kbar Q is allowed to work oradjust itself in a proper relative position, N, atall points in itsdescent, in consequence ol' the plates S S being allowed to work ontheir pivots o o, and the shaft P allowed to turn on its bearings. Thelog D is t'ed to the saw at any time by raising the lathe so that thebar Q will be retained by the catch b. r1 he operator then depresses thelever L, and thereby throws the part got the clutch in contact with thepart h, and motion will thereby oe communicated to the shatt F from theshaft I, and the roller E will feed the log D along underneath the saw,the movement ot' the log being stopped at any time hy releasing thelever L.

The whole arrangement, it will be seen, is

extremely simple and efficient, and is applicable to allcrosscnt-sawing.

I would remark that an auger, A', may he inserted in one end ofthe shaft1and a table or bed, B', attached to frame A underneath the auger forthe purpose of boring articles.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. The said bar Q, provided with the rods u a, and filled between theplates S S, which are attached by pivots o to the slides T T on theuprights V V, in connection with the har or plate 0, provided with aslot, o, to receive the wrist-pin n of the pulley N, and the parallelbars r 1", provided with ways or guides s, fitted in plates thor anequivalent device, attached to a shalt, I), all arranged substantiallyas and for the purpose speeitied.

2. The means employed for giving the feed movement to the logD-to wit,the rollerl and carriage U, the log being attached or dogged to thelatter, and resting or bearing on the roller, which is rotated at thewill ot'the operator through the medium of the levers L K, clutch J,pulleyH, band G, and gearingsdc, all arranged substantially as and forthe purpose specified.

3. The sliding bar I, with pulley Z attached, when used in connectionwith the saw It and arranged in relation therewith, as and for thepurpose specified.

Vitnesses:

J osnrn NEWTON, l). L. CoLLiNs.

N. B. BROWN.

